Optics Forum

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Undergrad What Lens to Put In Front of an Complex Lens to Push Focal Plane Back?
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High School LED light and guitar string (strobe light effect)
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High School Why we use spherical mirrors instead of parabolic mirrors?
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Undergrad Light Transmission Measurements: What Else Can You Find?
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High School In optics what do Tp and Ts stand for and what are they?
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Graduate Did Planck think the light emitted from black bodies to be quantised?
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Graduate Mirror coating and BSDF measurement costs?
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Graduate Earth's Rotation & Global Agriculture: Impact & Possibilities
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Undergrad Polar Ice Caps and the Earth's Speed of Rotation
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Graduate Fluorescence of a laser vs its pulse duration
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Graduate 180 degree phase shift of reflected light
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Graduate Measuring the speed of light in a straight line
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Undergrad Could the Sky Be Green Under Different Atmospheric Conditions?
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Graduate How to model light from a star?
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Graduate Position of the principal points of a telephoto lens system
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Graduate Connect: Coupling Light from 2 LEDs into a Single Fiber
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Undergrad How to calculate the focal length and focal point of collimator?
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Graduate Can a continous wave laser be converted to a more powerful pulsed laser?
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Undergrad Optics question: Looking at mirrors from parallel to the surface
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Graduate How to estimate the interaction time of Raman scattering?
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Graduate Crosstalk Algorithm - Optical system
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Undergrad Optics Equations - to reduce height
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High School Converting Lux to W/m^2 for Solar Radiation Measurement
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Undergrad Calculating distance between lux meter and light source
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Undergrad Optical versus digital reflections
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High School Mirrors spontaneously cracking
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Undergrad Virtual and real image with concave mirror at 45 degrees
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Graduate RF transmitter inside a metal enclosure, re. reflections
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Graduate Interferometer delay & line light spreading
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Undergrad Mirror box with 1 candela of luminous intensity light source
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Undergrad Questions about the definition of a metre (A. P. French's book)
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Graduate Power inside a microwave oven due to reflections
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Undergrad What is it about ice that makes it so reflective?
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Undergrad Can the energy in two waves cancel out? If so, why?
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Graduate Critical angle (symmetry of refraction) confusion
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Undergrad Relation between spectral intensity and spectral energy density
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Undergrad Using constructive interference of audio frequency waves to lower distortion
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Graduate ِAngular distribution of a scattered field
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High School The Illusion of Anti-Gravity (aka a Superior Mirage)
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High School Double Glazed Window Reflection
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High School Does Combined Luminosity of LEDs Add Up?
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Graduate Rotation of the plane of polarization of light by glucose
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Graduate ABCD matrix formalism for concave mirror
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High School Question about Primary Colors -- Why Red-Green-Blue?
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High School Question about whether UV light can penetrate a cardboard box
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Graduate Interference colors on a vinyl record
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Graduate Calculating the degree of polarization of reflecting light
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Undergrad Achieving the speed of light at the end of a whip
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Undergrad Basic question pertaining to Polar Coordinates & how to employ them
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Graduate Lensmaker's equation when the 2 mediums on both sides of the lens are different
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Undergrad Question on Optical Systems and Lenses
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High School What is the Length of a Compound Microscope?
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Undergrad Wavelength and size of holes or grating
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Undergrad Unleashing Solar Energy: The Potential of Mirrored Circles and Solar Panels
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High School The physics explanation of ~bendy~ rays
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Is this a diffraction pattern?
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Graduate Does twisted light violate Fermat's principle?
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Graduate A way to make the standing-wave patterns in a microwave oven visible
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Undergrad The sources of error in a diffraction grating experiment
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Undergrad Spectrum of laser light absorbed and re-emitted by a white object
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Undergrad Classical explanation for microwave door shielding
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High School Instrument using two concave lenses
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Undergrad Does the ruby laser (the first invented laser) have nonlinear behavior?
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Undergrad A heavier person vs. a lighter person diving into a pool
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Graduate Can heavy objects be used to modulate light waves with small amplitude?
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Undergrad What causes this curious light phenomenon? (video inside)
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Undergrad UV mercury lamps: Changing the 185nm vs 253.7nm ratio
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Undergrad Why does the polarity of a bass guitar recording vary?
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Undergrad What happens when two waves in counter phase affect a conductive material?
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Undergrad Particle analysis of diffraction
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Graduate How does a wave with circular polarization behave?
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Graduate Interference in thin films; confusion regarding geometry
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High School Adding up illuminations in lux
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Graduate Suspended particles and the index of refraction
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Graduate How does the speed of light change when it enters glass?
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Undergrad Can Light Travel Faster Than the Speed of Light in Glass?
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Graduate Is Light a Wave or a Particle?
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Undergrad Boundary conditions for TM and TE waves
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Undergrad Circuits and the Speed of Light (2)
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Circuits and the Speed of Light
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Graduate How Does VIS-NIR Reflectance Linearity Vary in Mixed Color Pigments?
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Graduate A living thing made of different photonic molecules?
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Graduate Deriving the Law of Reflection from Huygens Principle
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Undergrad What is it that makes light rebound off a surface?
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Graduate Where do photons originate in a vacuum filament?
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Undergrad Why find the highest order maxima/minima in slit equations?
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High School Can we see real, inverted and magnified images without a screen?
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Graduate How Does Compton Scattering Influence Backscatter Scanner Technology?
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Graduate Diffraction of light and conservation of energy.
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High School Negative Concave Lens - Creating a Beam Expander
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High School How do you explain a plane wavefront based on huygens' principle?
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Undergrad Lens selection for close proximity surface photos
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Undergrad How does the raster scan frequency affect the accuracy of a CRT TV picture?
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Graduate Adding Zooming Capability to my Far Infrared Spectrum Sensor
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Undergrad How is the direction of a harmonic wave expressed?
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Graduate How to calculate shadows in nanophotonics
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High School How small is the smallest hole that would still allow you to see through it?
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Graduate Photo-degradation of a biological sample
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Graduate Polarisation through a chiral nematic crystal
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Graduate Does a material change the direction of polarization of light?
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